KR100938841B1 - Touch panel - Google Patents

Abstract

PURPOSE: A multi touch panel of a resistance film method installing a transparent pattern electrode is provided to implement very high touch resolution and a multi touch function by forming X+ electrode, X- electrode, Y+ electrode and Y- electrode. CONSTITUTION: An X+ electrode, an X-electrode, a Y+ electrode and a Y-electrode are formed according to each side of an upper substrate(150). A plurality of transparency pattern electrodes maintains a mutual insulation state on an opposite side of a lower substrate. A plurality of transparency pattern electrodes is separated at predetermined intervals. A plurality of transparency pattern electrodes is patterned in Y-electrode direction in the Y+ electrode.

Description

Resistive Multi-Touch Panel {TOUCH PANEL}

The present invention relates to a resistive multi-touch panel. More specifically, the present invention provides a multi-touch through a structural feature of a touch panel in which an electrode for detecting touch coordinates is completed by having a transparent pattern electrode patterned only on a lower glass substrate. The present invention relates to a resistive multi-touch panel capable of realizing a function but also to a very high touch resolution, a touch device having the same, and a structure in which the touch panel and the display panel are combined.

With the development of mobile communication technology, electronic information terminals such as mobile phones, PDAs, and navigation have expanded their functions to more diverse and complex media providing means such as audio, video, wireless internet web browsers, etc. I'm doing it. Along with the development of such multimedia functions, a larger display screen is required within a limited size of an electronic information terminal, and accordingly, a display device using a touch panel is receiving more attention.

A touch display in which a touch panel is stacked on a liquid crystal display has an advantage of saving space compared to a conventional key input method by integrating a screen and coordinate input means. Therefore, the electronic information terminal to which the touch display is applied can increase the screen size and user convenience, and thus the use of the electronic information terminal is increasing.

When the touch panel is classified according to a detection method, a resistive type that changes a current or voltage value according to a position pressed by pressure in a state where a DC voltage is applied, and calculates a position from the changed value, Capacitive type that calculates the touch position using capacitance coupling in the applied state, and Electromagnetic type that senses the voltage change according to the selected position while the magnetic field is applied. ).

Among them, the resistive film is used in combination with a liquid crystal display device, a personal digital assistant, a navigation device, a PMP, an electronic notebook, a PDA, and the like. The resistive touch panel is used to detect a touch point. Therefore, it is divided into analog method and digital method.

1A and 1B are exploded perspective views and cross-sectional views schematically illustrating a conventional analog resistive touch panel. Referring to FIGS. 1A and 1B, a conventional resistive touch panel is configured to include an upper substrate 19 and a lower substrate 29 disposed to face the upper substrate 19. A first transparent conductive film (ITO) 15 having a uniform thickness, including a SnO ₂ ), an indium oxide (In ₂ O ₃ ) film, and the like, is deposited, and the upper electrode is energized with the first transparent conductive film 15. (11, 13) are printed in the X direction. Similarly, a second transparent conductive film 25 is deposited on the upper surface of the lower substrate 29, and lower electrodes 21 and 23 are deposited in the Y direction so as to conduct electricity with the second transparent conductive film 25. In addition, the transparent conductive films 15 and 25 are separated by a spacer 31 formed of an electrical non-conductor.

2A and 2B are circuit diagrams for describing an operating principle of the analog resistive touch panel of FIGS. 1A and 1B.

2A and 2B, when an arbitrary point between the upper electrodes 11 and 13 is touched while a voltage is applied between the upper electrodes 11 and 13, the first transparent conductive film is touched. 15 and the second transparent conductive film 25 are in contact with and energized. At this time, by measuring the voltage at the lower electrode 21 or 23, the X-axis position of the touched point can be detected.

Similarly, when any point between the lower electrodes 21 and 23 is touched while a voltage is applied between the lower electrodes 21 and 23, the first transparent conductive film 15 and the second transparent layer are touched. When the conductive film 25 is touched and energized, at this time, by measuring the voltage at the upper electrode “11” or “13”, the position of the touched point in the Y-axis direction may be detected.

Each voltage measured through the above method is input to an analog to digital converter (33: Analog to Digital Converter) connected to the ends of the upper and lower electrodes, is converted into a digital signal representing the coordinate information of the touch point, each operation It is sent to the system's control driver to implement the intended function.

However, the conventional analog resistive touch panel has a disadvantage in that the multi-touch function cannot be implemented due to its structural characteristics. The technology proposed to overcome the above problems is a digital resistive touch panel.

3A and 3B are exploded perspective views and cross-sectional views schematically illustrating a configuration of a conventional digital resistive touch panel. Conventional digital resistive touch panel, like the analog resistive touch panel has an upper substrate 19 and a lower substrate 29 that is installed opposite to the upper electrode (X1, X2 .. Xn) and The following differences exist in the configuration of the lower electrodes Y1, Y2..Yn. That is, the conventional digital resistive touch panel includes an analog resistive touch panel printed with four upper and lower electrodes (Fig. 1A; 11, 13/21, and 23) along the edge of the transparent conductive film. In contrast, a number of transparent electrodes Xn and Yn that cross each other perpendicularly to each of the inner surfaces of the upper substrate and the lower substrate are patterned by an etching process.

Referring to FIGS. 3A and 3B, the lower substrate 29 has a plurality of lower electrodes Y1, Y2... Yn formed in parallel to each other through ITO film patterning or glass patterning, and ends of each lower electrode. The lead wire and the load resistor RL are connected to each other. The upper substrate 19 is configured such that a plurality of divided upper electrodes X1, X2 ... Xn are formed in parallel to each other through ITO film patterning so that the upper electrode and the lower electrode vertically cross each other.

4 is a circuit diagram illustrating an operation principle of the digital resistive touch panel of FIGS. 3A and 2B.

Referring to FIG. 4, the position detection signal is sequentially applied to the "X2", "X3" .. "Xn" electrodes by applying a voltage to X1, turning SW_X1 on, and turning off the remaining switches. Apply Z1, Z2 ... Zn and measure the voltage. If a touch is made at a specific point, a high signal is generated at the touch-operated points T1 and T2 to detect the X and Y axis coordinates of the touched point. That is, the point (T1, T2) where the upper electrode and the lower electrode intersect each other acts as a switch, so that when the user presses a specific cross point (T1, T2), the effect is that the switch is closed. The touch point can be detected from the corresponding output signal.

In the digital resistive touch panel, each of the X and Y electrodes has a predetermined spacing and is formed in a panning manner so that each electrode is divided so that even if a touch operation occurs at two points at the same time, it does not electrically affect each other. Therefore, there is an advantage that the multi-touch function can be implemented.

As described above, the digital resistive touch panel detects touch coordinates by reading intersections T1 and T2 where contact occurs at a plurality of intersections formed between the upper electrode and the lower electrode. Therefore, a touch operation corresponding to a point other than the intersection point, that is, a point where the transparent electrode pattern between the electrode and the electrode is not formed cannot be detected. Accordingly, the touch resolution of the digital resistive film type becomes higher as the upper and lower electrodes patterned on the ITO film are patterned at the most dense intervals, so that the touch resolution becomes higher.

In general, the ITO film patterning process is more difficult to pattern the electrodes at densely spaced intervals than the glass patterning process. However, in the conventional digital resistive touch panel, an electrode for detecting touch coordinates has to be patterned on both the upper substrate and the lower substrate, and a glass substrate can be used as the lower substrate to form dense patterning of the lower electrode. Is possible, but because the upper substrate has to use a soft plastic film, it is difficult to form the upper electrode densely on the upper substrate, that is, the ITO film, and thus, there is a limit in improving the touch resolution of the touch panel. There was a low issue.

The present invention has been made to solve the above problems, an object of the present invention in the configuration of the electrode for detecting the touch coordinates, as a structural feature of the touch panel for patterning the electrode formed only on one substrate, that is, the lower glass substrate As a result, a resistive multi-touch panel, a touch device, and a structure in which the touch panel and the display panel are combined can realize very high touch resolution and also have a multi-touch function.

The object of the present invention is a multi-touch panel of a resistive film type, comprising: an upper substrate and a lower substrate having opposing surfaces disposed to face each other, a spacer provided between the upper substrate and the lower substrate to maintain a gap, and an upper substrate Insulating states of the transparent conductive film formed entirely on the opposite surface of the substrate and the opposite surfaces of the X + electrode, the X- electrode, the Y + electrode and the Y- electrode and the lower substrate are formed along each side of the upper substrate. And a plurality of transparent pattern electrodes formed in a bar shape in the direction of the Y- electrode from the Y + electrode while being spaced at regular intervals, wherein the X + electrode and the X- electrode and the X + electrode and the X- electrode are each different from each other of the upper substrate. Achievable by the resistive multi-touch panel characterized by being provided in the opposite side.

Another object of the present invention is a coupling structure having a touch panel formed on a display panel for generating a video image, wherein the upper substrate of the display panel is formed of glass or quartz, and mutually insulated on the outer surface of the upper substrate of the display panel Forming a plurality of transparent pattern electrodes which are patterned at regular intervals, and having the upper substrate of the touch panel facing the upper substrate of the display panel, and formed entirely on the upper substrate of the touch panel. And an X + electrode, an X- electrode, a Y + electrode, and a Y- electrode formed along each side of the upper substrate, and between the upper substrate of the display panel and the upper substrate of the touch panel to maintain a gap. It includes a touch panel formed on the display panel, characterized in that it comprises a spacer to It can be achieved by a coupling structure.

According to the multi-touch panel of the resistive method according to the present invention has the following remarkable effects compared to the resistive touch panel of the prior art.

1) A multi-touch function can be realized by forming a detection electrode formed with glass patterning on the lower substrate, an ITO coating layer deposited on the upper substrate, and an X + electrode, an X- electrode, a Y + electrode, and a Y- electrode formed along each side. It has the outstanding effect of achieving very high touch resolution.

2) Unlike the conventional touch panel, which requires patterning on both upper and lower substrates to form electrodes for detecting touch coordinates, the transparent electrode is patterned only on one substrate, thereby simplifying the manufacturing process and reducing production costs. That has a remarkable effect.

3) Due to the structural feature that all transparent pattern electrodes for touch coordinate detection are provided on only one substrate, it is not necessary to align the upper and lower substrates precisely, so that the upper and lower substrates are easily bonded unlike the conventional touch panel. There is an advantage of improving the process convenience that can be completed.

4) According to the patterning method in which the detection electrodes of the present invention are alternately arranged in a projection shape, there is a remarkable effect of increasing the probability of success of the user's touch operation by increasing the surface area accessible by the touch operation.

5) The touch module is placed on the upper surface of the display, but if the upper surface of the LCD, PDP, etc. is made of glass, ITO patterning is applied to the glass to reduce the cost of glass and increase the light transmittance.

Hereinafter, with reference to the accompanying drawings will be described in detail the advantages, features and preferred embodiments of the present invention.

In the resistive multi-touch panel according to the present invention, unlike the conventional multi-touch panel in which a plurality of electrodes are patterned on the upper and lower substrates in the configuration of the electrode for detecting the coordinates of the touch point, one substrate is used. In other words, both X and Y axis touch coordinates can be detected by only forming the patterning electrode of the lower glass substrate, so that the touch panel can realize a high touch resolution and a multi-touch function. Because of the patterning, the manufacturing process has simple features.

5A and 5B are exploded perspective views and cross-sectional views schematically illustrating a resistive multi-touch panel structure according to the present invention. The multi-touch panel according to the present invention includes an upper substrate 190 and a lower substrate 290 which is installed to face the lower substrate 290. The lower substrate 290 uses a glass or quartz substrate and has an upper portion. The substrate 190 uses a thin transparent film such as PET. The upper substrate 190 is provided with a transparent conductive film 150 applied over the entire surface, and the X + electrode and the X- electrode, and the Y + electrode and the Y- electrode are provided on each opposite side to maintain an insulated state. A plurality of transparent bar electrodes Z1, Z2, Z3,... Zn having a narrow width are patterned on the lower substrate 290 while maintaining a constant distance from each other.

Since the touch panel according to the present invention can detect both X-axis and Y-axis touch coordinates by forming a patterned electrode only on one substrate 290, the touch panel is formed on glass rather than the prior art of patterning transparent electrodes on an ITO film. Advantageous advantage of forming the transparent electrode as densely as possible can be actively utilized, and accordingly, the resistive multi-touch panel according to the present invention can maximize the touch resolution.

Hereinafter, the structure and operating principle of the resistive multi-touch panel according to the present invention may be formed only on the lower substrate 290 to detect both X-axis and Y-axis touch coordinates and to implement a multi-touch function. Let's take a look at.

In addition, below, one surface of the lower substrate 290 on which the electrodes of the multi-touch panel according to the present invention are patterned is referred to as an "upper surface of the lower substrate", and the upper substrate 190 facing the upper surface of the lower substrate 290. One surface of is referred to as "lower surface of the upper substrate".

5A and 5B, the lower substrate 290 according to the present invention is formed of thin glass, and a plurality of transparent pattern electrodes Z1, Z2... Zn are patterned on the upper surface of the lower substrate 290. Formed.

The plurality of transparent pattern electrodes Z1, Z2... Zn according to the present invention may be formed of tin oxide (SnO ₂ ), indium oxide (In ₂ O ₃ ), or the like on the entire surface of the lower substrate 290. It is formed by depositing a transparent conductive film (ITO; Indium Tin Oxide) having a uniform thickness, and then selectively patterning the transparent conductive film through an etching process or the like.

The upper substrate 190 according to the present invention is composed of a thin transparent film (Film) made of a plastic material such as PET (Poly Ethylene Terephtalate), the lower surface of the upper substrate 190 is a transparent conductive film such as indium tin oxide (ITO) 150 is a full surface deposition coated.

On the opposite sides of the ITO film on which the transparent conductive film is deposited, an X + electrode and an X- electrode for applying an X-axis measuring voltage, and a Y + electrode and Y- electrode for applying a Y-axis measuring voltage are provided with a transparent conductive film ( 150) to be energized. The X + electrode, the X- electrode, the Y + electrode, and the Y- electrode are preferably formed of silver (Ag), and the printing direction and structure thereof are preferably formed in a bar shape along each side of the upper substrate. .

Between the upper film 190 and the lower glass substrate 290, a spacer 310 formed of an electrical non-conductor is inserted along the edges of the upper and lower substrates 190 and 290 to be transparent to the upper ITO transparent conductive film 150. The space which floated between pattern electrodes Z1, Z2 ... Zn is provided. In addition, it is preferable to provide dot spacers (not shown) made of an insulating synthetic resin such as epoxy and an acrylic resin on the transparent electrode film at appropriate intervals so as to prevent the contact between the transparent electrode films under light pressure. .

Hereinafter, referring to FIGS. 6A, 6B, and 6C, transparent ITO transparent conductive electrodes Z1, Z2,... Zn formed on the lower substrate 290 and the upper surface ITO transparent conduction on the upper substrate 190 will be described. An operation principle and a detailed circuit configuration of detecting touch coordinates using the film 150 and voltage measuring electrodes (X + electrode, X− electrode, Y + electrode, and Y− electrode) will be described.

The touch device is composed of a touch panel and a touch sensor. As illustrated in FIG. 5, the touch panel includes an upper substrate on which a transparent conductive substrate is entirely coated, and a lower substrate including a plurality of transparent pattern electrodes patterned. The touch sensor applies a voltage to the touch panel and the user touches the touch panel. It consists of a circuit that analyzes the electrical signal generated when you touch.

Referring to FIG. 6A, the touch panel includes a lower substrate 290 having a plurality of transparent pattern electrodes Z1, Z2,... Zn patterned on an upper surface thereof, and a transparent electrode fully coated on the lower surface thereof. The upper substrate 190 is provided with an X + electrode, an X− electrode, a Y + electrode, and a Y− electrode, respectively, along the sides. All other components belong to the touch sensor, and the touch sensor includes an analog demultiplex 212, switches 214 and 216, a voltage grasping logic unit 231, a voltage sensing unit 33, and an operation control unit ( 230).

A method of grasping X and Y coordinate values using the touch device according to the present invention will be described. (1) a voltage is applied to the X + electrode and the X- electrode using the switches 214 and 216, and (2) the transparent pattern electrodes are sequentially sensed to determine whether a voltage is applied to each transparent pattern electrode, and (3) When a voltage is applied, the voltage value is sensed using the voltage sensing unit to determine the X coordinate and store it. Next, in order to determine the Y-axis coordinate value, (4) voltage is applied to the Y + electrode and the Y- electrode by using the switches 214 and 216, and (5) the transparent pattern electrode is sensed in turn to provide a voltage to each transparent pattern electrode. (6) When the voltage is applied, the voltage value is sensed using the voltage sensing unit to determine the Y coordinate and store it.

6A is a circuit diagram illustrating a configuration diagram of a touch device and an operating principle of detecting X-axis touch coordinates according to the present invention. A method of determining the X coordinate value by the touch device according to the present invention will be described with reference to FIG. 6A. First, the first measuring supply voltage 210 is connected to the X + electrode via a first applying voltage selection switch 214 and the second measuring supply voltage 218 is connected via a second applying voltage selection switch 216. Connected to the X- electrode. Accordingly, a voltage drop is gradually generated from the X + electrode to the X− electrode in the transparent electrode formed on the upper substrate 190. For example, when the first measurement power supply voltage 210 is 5V and the second measurement power supply voltage 218 is 0V, the transparent electrode formed on the upper substrate 190 has 5V from the X + electrode to the X− electrode. 0V is applied with voltage drop evenly at.

When the user touches the point T3, the voltage of the point T3 formed on the transparent electrode of the upper substrate 190 is transferred to the voltage sensing unit through the transparent pattern electrode Z1 formed on the lower substrate 290 and the analog demultiplex 212. The voltage sensing unit 33 senses the applied voltage level and transfers the applied voltage to the operation control unit 230. The operation control unit calculates the X coordinate value and stores it. At this time, the X coordinate value is stored using a memory provided in the operation control unit or stored using a separate memory. The operation control unit controls such as switching circuits such as the first applied voltage selection switch 214, the second applied voltage selection switch 216, and the analog demultiplex 212. An analog-to-digital converter (33) may be used as the voltage sensing unit 33. In order to increase the accuracy of the touch coordinates, an A / D converter with high precision may be used.

6C is a partial circuit diagram illustrating an operation principle of detecting X-axis touch coordinates from a touch panel according to the present invention. As shown in FIG. 6C, the voltage applied to the point T3 is calculated by Equation 1. The voltage sensing unit 33 senses the voltage level applied to the point T3 and outputs it to the operation control unit.

Where V _T3 is the voltage applied to the T3 point, R1 is the resistance of the transparent conductive film formed on the upper substrate between the X + electrodes and the T3 point, R2 is the resistance of the transparent conductive film formed on the upper substrate between the X- electrodes at the T3 point, and Vd is Means the voltage difference between the X + electrode and the X− electrode.

In the same manner, a method of reading the Y coordinate value will be described with reference to FIG. 6B. First, the first measuring supply voltage 210 is connected to the Y + electrode through a first applying voltage selection switch 214 and the second measuring supply voltage 218 is connected through a second applying voltage selection switch 216. Is connected to the Y- electrode. Therefore, the voltage drop gradually occurs from the Y + electrode to the Y− electrode in the transparent electrode formed on the upper substrate 190.

When the user touches the point T3, the voltage of the point T3 formed on the transparent electrode of the upper substrate 190 is transferred to the voltage sensing unit through the transparent pattern electrode Z1 formed on the lower substrate 290 and the analog demultiplex 212. The voltage sensing unit 33 senses the applied voltage level and then transfers the applied voltage level to the operation control unit 230. The operation control unit 230 calculates the Y coordinate value and stores it.

Coordinate values stored in the memory may be secured by the number of coordinates that allow multi-touch. For example, in FIG. 6A, when the user touches the T3 and T4 points at the same time, at least two storage spaces are needed to scan and store the voltage levels corresponding to the X coordinate values as shown in Table 1 below.

Transparent pattern electrode X voltage level (Volt) Y voltage level (Volt) Z1 1.0 - Z2 1.4 -

Next, as shown in FIG. 6B, when the user scans the voltage levels corresponding to the Y coordinate values of the T3 and T4 points, the respective voltage levels thereof are stored in the format shown in Table 2.

Transparent pattern electrode X voltage level (Volt) Y voltage level (Volt) Z1 1.0 3.0 Z2 1.4 2.2

In Tables 1 and 2, the voltage levels for X and Y for the points T3 and T4 are described as being stored, but it is also possible to store them as coordinate values using a proportional expression for the resistance.

However, as shown in FIG. 6B, when two or more points are simultaneously touched by the same transparent pattern electrode, the touch device shown in FIG. 6 may not determine an accurate touch position. For example, as shown in FIG. 6B, when two points T5 and T6 positioned at the transparent pattern electrode Z6 are touched at the same time, the touch device according to the present invention recognizes that the middle point of T5 and T6 is touched. The present invention provides a touch device having a structure as shown in FIG.

7 is a circuit diagram of a touch device according to one embodiment of the present invention. Only structural differences between the touch device shown in FIG. 6 and the touch device shown in FIG. 7 will be described. The touch device illustrated in FIG. 7 is configured by dividing the transparent pattern electrode formed on the lower substrate 290 into two left and right transparent pattern electrodes with respect to the vertical center. That is, each transparent pattern electrode was divided into right transparent pattern electrodes ZR1, ZR2, ZR3, ..., ZRn and left transparent pattern electrodes ZL1, ZL2, ZL3, ..., ZLn. In order to sense the voltage level applied to the transparent pattern electrode divided in this manner, two analog demultiplexes 212L and 212R, voltage grasping logic units 231L and 231R, and voltage sensing units 33L and 33R are provided. . The touch device having the configuration as shown in FIG. 7 may determine an accurate position even when a touch point is generated such as T5 and T6. In general, when the multi-touch is used, the user enlarges and contracts based on the center point, and thus the structure of FIG. 7 can significantly reduce the multi-touch malfunction. In FIG. 7, an example of dividing one transparent pattern electrode into two parts is provided, but the smaller the division of the transparent pattern electrode is, the more effective it is to prevent a malfunction of multi-touch.

8 is another embodiment of a transparent pattern electrode formed by patterning on a lower substrate of the present invention. As shown in FIG. 8, the transparent pattern electrodes Z1, Z2,..., Zn are protrusion-shaped electrodes protruding in a direction perpendicular to the bar shape in the long direction. The protruding electrode pattern may increase the surface area reachable by touch manipulation, thereby increasing the probability of the user's touch manipulation success. In particular, since the touch recognition is not performed between the transparent electrode patterns Z1 and Z2, the problem that the touch recognition is not performed when the touch is performed in the horizontal linear direction is improved.

9 is a cross-sectional view illustrating a coupling structure of a display panel of a conventional display device and a touch panel positioned on the display panel. As shown in FIG. 9, the liquid crystal panel 800 has a structure in which a liquid crystal material 830 is injected between the upper plate 810 and the lower plate 820 as an example of the display panel of the conventional display device. ) And the lower substrate 290 are configured to be bonded on the upper plate of the liquid crystal panel. That is, since the lower substrate 290 for the touch panel made of glass is laminated on the top plate of the display panel, the thickness of the touch display device is increased. Hereinafter, to provide a touch panel structure that can solve the problem that the thickness of the touch display device is thick due to the two substrates are continuously stacked as described above.

10 is a cross-sectional view illustrating a coupling structure of a display panel and a touch panel according to the present invention. Referring to FIG. 10, in the coupling structure of the display panel 800 and the touch panel 700 according to the present invention, by applying a shared substrate 500 that simultaneously performs a role of an upper plate of the display panel and a lower substrate of the touch panel, It is possible to reduce the thickness of a conventional touch display device in which two substrates are stacked in succession.

That is, one substrate is used for the upper panel of the display and the lower panel of the touch panel. The transparent pattern electrode 600 used for the touch panel is patterned on one surface of one shared substrate 500 by using the above points, and the ITO electrode 840 required for the upper panel of the display panel on the opposite surface of the one shared substrate 500. By forming a, to serve as the upper substrate of the display panel and the lower substrate of the touch panel with one shared substrate 500.

The display panel of the present invention refers to a panel that generates an image image by using self-emission or external light. In the embodiments of FIGS. 9 and 10, an example of using a liquid crystal panel as a display panel is illustrated. The present invention is not limited thereto, and an organic EL panel using a glass or quartz as a top plate, a field emission device panel, or the like may be used as the display panel.

While preferred embodiments of the present invention have been described above using specific terms, such terms are only for clarity of the present invention, and preferred embodiments of the present invention and the described terms are derived from the spirit and scope of the following claims. It is obvious that various changes and changes can be made without departing.

1A and 1B are exploded perspective views and cross-sectional views schematically showing a conventional analog resistive touch panel.

2A and 2B are circuit diagrams for describing an operating principle of the analog resistive touch panel of FIGS. 1A and 1B.

3A and 3B are exploded perspective views and cross-sectional views schematically illustrating a configuration of a conventional digital resistive touch panel.

4 is a circuit diagram illustrating the operation principle of the digital resistive touch panel of FIGS. 3A and 2B.

5A and 5B are exploded perspective views and cross-sectional views schematically illustrating a structure of a resistive multi-touch panel according to the present invention.

6A is a circuit diagram for explaining a configuration diagram of a touch device and an operating principle of detecting X-axis touch coordinates according to the present invention;

6B is a circuit diagram for explaining a configuration diagram of a touch device and an operating principle of detecting Y-axis touch coordinates according to the present invention;

6C is a partial circuit diagram for explaining an operation principle of detecting X-axis touch coordinates from a touch panel according to the present invention.

7 is a circuit diagram of a touch device according to one embodiment of the present invention.

8 is another embodiment of a transparent pattern electrode formed by patterning on the lower substrate of the present invention.

9 is a cross-sectional view illustrating a coupling structure of a display panel of a conventional display device and a touch panel positioned on the display panel.

10 is a cross-sectional view showing a coupling structure of a display panel and a touch panel according to the present invention;

***** Brief description of the main symbols on the drawings *****

33: voltage sensing unit 150: transparent conductive film

190: upper substrate 210: applied power supply voltage for first measurement

212: analog demultiplex 214: first applied voltage selection switch

216: second applied voltage selection switch 218: applied power supply voltage for the second measurement

230: operation control unit 231: voltage grasp logic unit

290: lower substrate 310: spacer

Claims (11)

As a resistive multi-touch panel, An upper substrate and a lower substrate having opposing surfaces disposed to face each other; A spacer provided between the upper substrate and the lower substrate to maintain a gap; A transparent conductive film formed entirely on the opposite surface of the upper substrate; An X + electrode, an X− electrode, a Y + electrode, and a Y− electrode formed along each side of the upper substrate; And And a plurality of transparent pattern electrodes formed in a bar shape in a direction from the Y + electrode to the Y- electrode while being spaced apart at regular intervals while maintaining an insulated state on opposite surfaces of the lower substrate, wherein the X + electrode and the X- electrode And the Y + electrode and the Y− electrode are provided on opposite sides of the upper substrate, respectively. The method of claim 1, Each of the transparent pattern electrodes may be formed by dividing the left and right with respect to a center thereof. The method of claim 1, The transparent conductive film and the plurality of transparent pattern electrodes are formed of indium tin oxide (ITO), the X + electrode, the X- electrode, the Y + electrode, and the Y- electrode are formed of silver (Ag), and the lower substrate is made of glass. Or a resistive multi-touch panel, which is formed of quartz. The method of claim 3, wherein The upper substrate is a resistive multi-touch panel, characterized in that formed with a transparent film. As a resistive multi-touch device, An upper substrate and a lower substrate having opposing surfaces disposed to face each other; A spacer provided between the upper substrate and the lower substrate to maintain a gap; A transparent conductive film formed entirely on the opposite surface of the upper substrate; An X + electrode, an X− electrode, a Y + electrode, and a Y− electrode formed along each side of the upper substrate; And And a plurality of transparent pattern electrodes formed in a bar shape in a direction from the Y + electrode to the Y- electrode while being spaced apart at regular intervals while maintaining an insulated state on opposite surfaces of the lower substrate, wherein the X + electrode and the X- electrode And the Y + electrode and the Y− electrode are provided on opposite sides of the upper substrate, respectively; And And a voltage sensing unit connected to the transparent pattern electrode to output a voltage level. The method of claim 5, A first applied voltage selection switch for selecting one of the X + electrode and the Y + electrode, and a second applied voltage selection switch for selecting one of the X- electrode and the Y- electrode; When the first applied voltage selection switch selects and switches the X + electrode, the second applied voltage selection switch further includes an operation control unit for generating a control signal for selecting and switching the X- electrode. Multi touch device. The method of claim 5, And a voltage grasp logic unit configured to determine whether a voltage is applied to the transparent pattern electrode between the transparent pattern electrode and the voltage sensing unit. The method of claim 7, wherein The resistive film type multi-touch further includes an analog demultiplexer configured to selectively connect any one of the plurality of transparent pattern electrodes to the voltage determining logic unit between the plurality of transparent pattern electrodes and the voltage checking logic unit. Device. The method of claim 7, wherein The voltage sensing unit is a resistive type multi-touch device, characterized in that formed by an analog to digital converter (Analog to Digital Converter). The method of claim 5, Each of the transparent pattern electrodes is formed by dividing the left and right with respect to a center. A coupling structure having a touch panel formed on a display panel for generating a video image, The upper substrate of the display panel is formed of glass or quartz, Forming a plurality of transparent pattern electrodes on the outer surface of the upper substrate of the display panel while being insulated from each other and patterned at regular intervals, and having the upper substrate of the touch panel facing the upper substrate of the display panel; The upper substrate of the touch panel includes a transparent conductive film formed entirely on the entire surface, and an X + electrode, an X- electrode, a Y + electrode, and a Y- electrode formed along each side of the upper substrate. And a spacer provided between the upper substrate of the display panel and the upper substrate of the touch panel to maintain a gap therebetween.

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